的ValidationSummary局部视图中没有显示错误 [英] ValidationSummary inside a partial view not showing errors

问题描述

我有一个这样的局部视图（简体）：

I have a partial view like this (simplified):

@model Portal.Models.LoginModel

<div class="login-container k-block">

    <section id="login-form" class="">
        @using (Html.BeginForm(actionName, controllerName, new { ReturnUrl = ViewBag.ReturnUrl }))
        {
            @Html.AntiForgeryToken()
            @Html.ValidationSummary(true)

            <fieldset id="login-form-list-items">
                <ol>
                <li>
                    @Html.LabelFor(m => m.CardNumber)
                    @Html.TextBoxFor(m => m.CardNumber, new { @class="k-textbox"})
                    <div class="k-error-colored">
                        @Html.ValidationMessageFor(m => m.CardNumber)
                    </div>
                </li>
                <li>
                    @Html.LabelFor(m => m.Pin)
                    @Html.PasswordFor(m => m.Pin, new { @class="k-textbox"})
                    <div class="k-error-colored">
                        @Html.ValidationMessageFor(m => m.Pin)
                    </div>
                </li>
                <input id="login-input-submit" class="k-button" type="submit" value="Enter" />
            </fieldset>

</div>

在我的登录查看我叫这样的局部视图：

And in my login view I call this partial view like:

@model Portal.Models.LoginModel

@Html.Partial("_LoginFormNoRegistration", Model, new ViewDataDictionary { { "actionName", "Login" }, { "controllerName", "Account" } })

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}

问题是，当在控制器中的登录方法添加了一个错误，如：

The problem is that when the login method in the controller adds an error like:

    public ActionResult Login(LoginModel model, string returnUrl)
    {
        //...

        // If we got this far, something failed, redisplay form
        ModelState.AddModelError("", "The user name or password provided is incorrect.");
        return View(model);
    }

该消息不会在验证摘要显示...我不明白为什么......可能是什么问题呢？一些JavaScript库丢失？

The message is not show in the validation summary... I don't understand why... What could be the problem? Some javascript library missing?

更新

我还发现，所产生的形式 NOVALIDATE 属性设置：

I also found that the form generated as the novalidate attribute set:

<form action="/" method="post" novalidate="novalidate">
//...
</form>

我不知道为什么。

I don't know why.

推荐答案

我发现这个问题。

我是通过一个新的ViewData在其中覆盖父视图的ViewData的的的RenderPartial，所以模型的状态丢失，如下解释：的传递额外的ViewData到ASP.NET MVC 4局部视图，而传播的ModelState错误。

I was passing a new ViewData in the RenderPartial which was overriding the ViewData of the parent view, so the model state was lost, as explained here: Pass Additional ViewData to an ASP.NET MVC 4 Partial View While Propagating ModelState Errors.

更改主视图：

@model Portal.Models.LoginModel

@{
    ViewData.Add("actionName", "Login");
    ViewData.Add("controllerName", "Account");
    Html.RenderPartial("_LoginFormNoRegistration", Model, ViewData);
}

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}

的伎俩！

另外，如果你想显示一般错误消息在模型中的的ValidationSummary 时，一定要带一个空字符串作为键添加错误：

Also, if you want to show a general error message for the model in the validationsummary, be sure to add the error with an empty string as key:

ModelState.AddModelError（错误，提供的用户名或密码不正确。）; - 不起作用

ModelState.AddModelError（，提供的用户名或密码不正确）; - 工作

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